<template>
  <el-form inline="true">
    <el-form-item>
      <selector v-model="params.difficulty" placeholder="请选择题目难度" style="width: 200px;"></selector>
    </el-form-item>
    <el-form-item>
      <el-input v-model="params.title" placeholder="请您输入要搜索的题目标题"/>
    </el-form-item>
    <el-form-item>
      <el-button plain @Click="onSearch">搜索</el-button>
      <el-button plain type="info" @click="onReset">重置</el-button>
      <el-button plain type="primary" :icon="Plus" @click="onAddQuestion">添加题目</el-button>
    </el-form-item>
  </el-form>
  <el-table height="526px" :data="questionList">
    <el-table-column prop="questionId" width="180px" label="题目Id"/>
    <el-table-column prop="title" label="题目标题"/>
    <el-table-column prop="difficulty" label="题目难度" width="90px">
      <template #default="{ row }">
        <div v-if="row.difficulty === 1" style="color:#3EC8FF;">简单</div>
        <div v-if="row.difficulty === 2" style="color:#FE7909;">中等</div>
        <div v-if="row.difficulty === 3" style="color:#FD4C40;">困难</div>
      </template>
    </el-table-column>
    <el-table-column prop="createName" label="创建人" width="140px"/>
    <el-table-column prop="createTime" label="创建时间" width="180px"/>
    <el-table-column label="操作" width="100px" fixed="right">
      <template #default="{ row }">
        <el-button type="text" @click="onEdit(row.questionId)">编辑</el-button>
        <el-button type="text" class="red" @click="onDelete(row.questionId)">删除</el-button>
      </template>
    </el-table-column>
  </el-table>
  <el-pagination background size="small" layout="total, sizes, prev, pager, next, jumper" :total="total"
                 v-model:current-page="params.pageNum" v-model:page-size="params.pageSize"
                 :page-sizes="[1, 5, 10, 15, 20]" @size-change="handleSizeChange"
                 @current-change="handleCurrentChange"/>

  <question-drawer ref="questionEditRef" @success="onSuccess"></question-drawer>
</template>

<script setup>
import {Plus} from "@element-plus/icons-vue"
import Selector from "@/components/QuestionSelector.vue"
import {reactive, ref} from "vue";
import {deleteQuestionService, getQuestionListService} from "@/apis/question.js";
import QuestionDrawer from "@/components/QuestionDrawer.vue";

const params = reactive({
  pageNum: 1,
  pageSize: 10,
  difficulty: '',
  title: '',
})

const questionList = ref([])
const total = ref(0)

async function getQuestionList() {
  const result = await getQuestionListService(params)
  questionList.value = result.rows
  console.log(result)
  total.value = result.total
}

getQuestionList()

function handleSizeChange(newSize) {
  // params.pageSize = newSize
  params.pageNum = 1
  getQuestionList()
}

function handleCurrentChange(newPage) {
  // params.pageNum = newPage
  getQuestionList()
}

function onSearch() {
  params.pageNum = 1;
  getQuestionList()
}

function onReset() {
  params.pageNum = 1
  params.pageSize = 10
  params.title = ''
  params.difficulty = ''
  getQuestionList()
}

const questionEditRef = ref()
const onAddQuestion = () => {
  questionEditRef.value.open()
}

function onSuccess(service) {
  if (service === 'add') {
    params.pageNum = 1
  }
  getQuestionList()
}

async function onEdit(questionId) {
  questionEditRef.value.open(questionId)
}

async function onDelete(questionId) {
  // 弹出确认框，确认删除
  ElMessageBox.confirm(
      '此操作将永久删除该题目, 是否继续?',
      '警告', // 确认框标题
      {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning',
      }
  )
      .then(async () => {
        // 如果用户点击了确定，执行删除操作
        await deleteQuestionService(questionId);
        params.pageNum = 1; // 删除后返回第一页
        getQuestionList(); // 刷新列表
        ElMessage.success('删除成功!');
      })
      .catch(() => {
        // 如果用户点击了取消，什么都不做
        ElMessage.info('已取消删除');
      });
}
</script>
